need troubleshooting input concerning air suspension

[bcredliner]

I have had a leaking air suspension bag on the right side for a few weeks, left side has been replaced. A few days ago both sides dropped to zero. I checked the fuses (32 107 123), all good. I replaced the bag -no fix. I pulled the piece of shielding under the pump to check it over. Could not find anything wrong. I installed a new pump and control valve--still no fix. I have rechecked all connections for lines, fuses and connections. Any suggestions?

When I first started it up after installing the pump I heard what sounded like a short burst of air the first two times. After that nothing. I couldn't tell where it was coming from. I don't know if it if it had anything do with the air system. Thoughts?

I have a Foxwell 530 scanner for BMWS but don't think I have the necessary modules to test the system or I don't know how to find the test. Do I need to download anything to have the run test?